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眼药水的处方如下: 硫酸鋅0.3g 硼酸3.0g 硫酸黄連素0.1g 薄荷腦0.01g 加蒸餾水制成100ml 根据上处方只測定硫酸鋅及硼酸的含量。按苏联药典方法测定硼酸时,發现硫酸鋅与硫酸黄連素均消費氫氧化鈉标准溶液,妨碍測定,加入亞鉄氰化鉀溶液后,能去掉硫酸鋅的影响,而硫酸黄連素的影响仍然存在,故硼酸含量难于测得。但因硫酸黄連素含量少,对結果影响不大,仍將結果提出給讀者作参考。至于硫酸鋅含量的测定,曾用标准亞鉄氰化鉀溶液滴定。由电位法决定終点,不过結果不好。由于硫酸鋅含量不大,用極譜分析法可得较
The prescription of eye drops are as follows: Zinc sulfate 0.3g Boric acid 3.0g Berberine sulfate 0.1g Menthol 0.01g Add distilled water 100ml According to the prescription only the content of zinc sulfate and boric acid were determined. According to the Soviet Union Pharmacopoeia method for the determination of boric acid, zinc sulfate and berberine were found to consume sodium hydroxide standard solution, impeding the determination, adding potassium cyanide solution can remove the impact of zinc sulfate, and the impact of berberine sulfate still exists, So boric acid content is difficult to measure. However, due to the low content of berberine sulfate, the results have little effect, the results will be presented to the reader for reference. As for the determination of zinc sulfate content, the standard solution of potassium cyanide titration titration. The end of the potential method, but the result is not good. Due to the small content of zinc sulfate, polarographic analysis can be used more